Server {2} has not been assigned an IPv4 address. IPv6 is only supported in Exchange Server 2007 Service Pack 1 when it is ...

Server {2} has not been assigned an IPv4 address. IPv6 is only supported in Exchange Server 2007 Service Pack 1 when it is installed on a computer running Windows Server 2008 that has both IPv4 and IPv6 enabled. See http://go.microsoft.com/fwlink/?LinkId=102391 for more details.